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Design of bidirectional power converters coupled with coils for wireless charging of AUV docking systems

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Abstract

The docking station is usually deployed at seafloor as a charging node to enhance the endurance of autonomous underwater vehicles (AUVs). However, for deep-sea observation requirements, it is nearly unaffordable to deploy extremely long cables to provide power for docking stations. Therefore, this paper proposes a possible power-supply solution by developing an underwater bidirectional wireless power transmission (UBWPT) system. To improve the efficiency of the UBWPT system in underwater scenarios, the power converters coupled with coils is designed by analyzing the eddy current loss and parasitic jumper capacitor in seawater. Additionally, two independent controllers are developed for the transmitting and receiving converters to achieve power flow control underwater. The effectiveness of the bidirectional power converters is verified by developing a 51-W charging prototype system, which improves the system efficiency by 3% in simulated seawater.

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Acknowledgements

The authors would like to thank for the HOME team member Liang Chen’s preliminary study. This work was supported by the Key Research and Development Program of Zhejiang Province (2020C03012), the Marine S&T Fund of Shandong Province (2018SDKJ0211), the Fund of Platform for Technical Innovation Ningbo Research Institute of Zhejiang University (NRI-ZJU-2019001), and the National Natural Science Foundation of China under grant 5210110055.

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Authors and Affiliations

  1. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China

    Mingwei Lin, Canjun Yang, Dejun Li & Ri Lin

  2. Advanced Technology Institute, Zhejiang University, Hangzhou, 310027, China

    Feng Zhang

  3. Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China

    Canjun Yang

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  1. Mingwei Lin
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  2. Feng Zhang
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  3. Canjun Yang
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  4. Dejun Li
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  5. Ri Lin
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Correspondence to Mingwei Lin.

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Lin, M., Zhang, F., Yang, C. et al. Design of bidirectional power converters coupled with coils for wireless charging of AUV docking systems. J Mar Sci Technol 27, 873–886 (2022). https://doi.org/10.1007/s00773-022-00877-7

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  • DOI: https://doi.org/10.1007/s00773-022-00877-7

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